How do I delete audio files on my Nexus 7

How do I delete audio files on my Nexus 7

Hello, I need help deleting audio files on my nexus 7. I recently used isyncr to download my itunes library onto my nexus 7. I put some of the songs I didnt like on there by mistake and I want to delete it but i cant find a way how to do so. I went on settings and on storage and click audio files but when i clicked on them it just played them. I really want the memory that the songs are taking up back please can someone tell me how to delete audio files from my nexus 7. thanks